Padding Oracle encryption vulnerability detected.

• Rule ID: java_lang_padding_oracle_encryption_vulnerability
• Languages: java
• Source: padding_oracle_encryption_vulnerability.yml

Description

Using a block cipher algorithm mode, such as CBC, together with a padding scheme is vulnerable to Padding Oracle attacks.

Remediations

❌ Do not use CBC (Cipher Block Chaining) mode with padding

  Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");

✅ Prefer GCM (Galois/Counter Mode) instead

  Cipher c = Cipher.getInstance("AES/GCM/PKCS5Padding");

Resources

• Java Cipher class
• Java Security Standard Algorithm Names

Associated CWE

• CWE-327: Use of a Broken or Risky Cryptographic Algorithm

OWASP Top 10

• A02:2021 - Cryptographic Failures

Configuration

To skip this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --skip-rule=java_lang_padding_oracle_encryption_vulnerability

To run only this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --only-rule=java_lang_padding_oracle_encryption_vulnerability